409 research outputs found
Global Max-Min Fairness Guarantee for ABR Flow Control
No full textThis paper addresses Available Bit Rate (ABR) service fairness in wide area ATM networks. In traffic management, fairness is generally understood as equally sharing the available bandwidth of a link among all its contending users. The most widely used specific fairness measure is Max-Min fairness [14]. Fairness is a very important performance measurement for ABR flow control, but no mathematical fairness guarantee has been proposed. In this paper, we define a specific category of ABR flow control algorithms as "Equal Share Schemes". For Equal Share Schemes, mathematical analysis proves that global Max-Min fairness can be achieved without exception. Key words: Max-Min fairness, ABR service, Equal Share Scheme, FairShare, EqualShare Dr. David W. Petr is the corresponding author. This research is partially supported by Sprint Corporation. Multiplexer Queue Server Controllable Users Users Uncontrollable High Priority Low Priority Figure 1: Single Node Network Architecture 1 Introducti..
Similar ABR waveforms in <i>Mcph1<sup>tm1a/tm1a</sup></i> and wild type mice at 9 weeks old.
No full text<p> A & B illustrate click-evoked ABR waveforms recorded in a wildtype (green) and a<i>Mcph1<sup>tm1a</sup></i><sup>/<i>tm1a</i></sup> (red) mouse, respectively. The dB SPL of the click stimulus for each response is indicated on the abscissa. The scale bar indicates 5 µV amplitude of response. The heavy lines indicate the click-ABR threshold allocated to each mouse. C. (inset) Mean click-evoked ABR waveforms recorded at 21 dB sensation level for wildtype (n = 8, green) and <i>Mcph1<sup>tm1a</sup></i><sup>/<i>tm1a</i></sup> (n = 8, red).</p
Relaunching ABR in the Midst of a Global Pandemic: Highlights of Vol. 23 (No. 1)
No full textWe relaunched the all-digital American Business Review (ABR) in Fall 2019. Little did we imagine that COVID-19 would appear in Spring 2020 and disrupt life all over the globe. All three audiences of ABR viz. Businesses, Business Students and Business Faculty have had to scramble over the last few months. Businesses that we research, teach and learn about as Business Professors and Students had the most difficult time of all with the global lockdowns. Essential businesses including food, medicine, sanitation and their supply chains and distribution channels had to keep working somehow-anyhow. Along with essential services were our lifesavers including medical, emergency, and national security personnel globally who continued to work at great personal health risk. Those businesses that were not considered essential had to shut down for public health and safety. In the process, all businesses had to suffer great losses. We at ABR recognize and salute you all for your great contribution during this global health crisis. Business students, in the US had to leave campus and continue studies online and at very short notice. Similarly, business faculty had to move face-to-face classes online overnight as campuses went into lockdown. Against this challenging backdrop our review board and referees did an outstanding job of providing knowledgeable and constructive reviews to our authors. Our author/s responded to reviewer comments in great detail and the joint efforts of reviewers resulted in the issue that is before you
Cracking potential of short- and long-term aged binder with various levels of ABR
No full textIt is widely accepted that using reclaimed asphalt pavement (RAP) and recycled asphalt shingles (RAS) could improve the sustainability of asphalt concrete (AC), in terms of cost savings and environmental factors. This should be only valid when short- and long-term pavement performance are not compromised. This thesis presents an experimental evaluation of the rheological properties of binders from various sources to investigate the effects of aging and increasing asphalt binder replacement (ABR) levels. In addition to the standard Superpave grading parameters, the additional rheological parameters for low-temperature cracking susceptibility and block and fatigue cracking were derived from various dynamic shear rheometer (DSR) and bending beam rheometer (BBR) tests. Binders from five AC designed with varying ABR percentages (from 0 to 60%) were recovered using the standard Rotovap test procedure. The base binder used in the AC design and binders recovered from RAP and RAS were also tested. In addition to standard aging protocols, base binders were subjected to a second pressure aging vessel (PAV), while one PAV was applied for the extracted binders. Almost all additional rheological parameters appeared to maintain consistent trends with aging and increasing ABR levels. The considered parameters are shown to be helpful in evaluating progression in the brittleness of binders with ABR and aging. Based on the outcome of the experimental program (binder level and mixture level), it was concluded that AC with ABR levels above 20 percent could suffer from short- and long-term cracking potential. Asphalt concrete with high ABR content can already be at a critically-aged condition immediately after production and, as a result, aging progresses much faster in the binders of such mixes.Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2019-08-01The student, Jing Ma, accepted the attached license on 2017-07-12 at 14:56.The student, Jing Ma, submitted this Thesis for approval on 2017-07-12 at 14:56.This Thesis was approved for publication on 2017-07-17 at 14:42.DSpace SAF Submission Ingestion Package generated from Vireo submission #11429 on 2018-03-02 at 13:01:46Made available in DSpace on 2018-03-02T19:59:36Z (GMT). No. of bitstreams: 2
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Previous issue date: 2017-07-17Embargo set by: Seth Robbins for item 105050
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Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemEmbargo set by: Seth Robbins for item 105050
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Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemU of I Only Restriction Lifted for Item 105050 on 2020-03-03T10:15:39Z
USMLE Step 3 Scores Have Value in Predicting ABR Core Examination Outcome and Performance: A Multi-institutional Study
No full textFull author list omitted for brevity. For the full list of authors, see article.RATIONALE AND OBJECTIVES: We analyzed multi-institutional data to determine if Step 3 performance tiers can identify radiology residents with increased risk of Core examination failure and submean performance. MATERIALS AND METHODS: We collected Step 3 scores (USMLE Step 3 or COMLEX Level 3) and American Board of Radiology (ABR) Core examination outcomes and scores for anonymized residents from 13 different Diagnostic Radiology residency programs taking the ABR Core examination between 2013 and 2019. Step 3 scores were converted to percentiles based on Z-score, with Core outcome and performance analyzed for Step 3 groups based on 50th percentile and based on quintiles. Core outcome was scored as fail when conditionally passed or failed. Core performance was measured by the percent of residents with scores below the mean. Differences between Step 3 groups for Core outcome and Core performance were statistically evaluated. RESULTS: Data were available for 342 residents. The Core examination failure rate for 121 residents with Step 3 scores < 50th percentile was 19.8% (fail relative risk=2.26), significantly higher than the 2.7% failure rate for the 221 other residents. Of 42 residents with Step 3 scores in the lowest quintile, the Core failure rate increased to 31.0% (fail relative risk=3.52). Core performance improved with higher Step 3 quintiles. CONCLUSION: Step 3 licensing scores have value in predicting radiology resident performance on the ABR Core examination, enabling residency programs to target higher risk residents for early assessment and intervention
The rise and fall of Carl Schmitt
No full textIt's hard to account for a biography that, its author acknowledges, is "of such tortuous dimension" and which follows Schmitt's works and their revisions closely, sometimes almost month by month, across much of the 96 years of his life. At over 550 pages of text, the biography "comes close to a chronicle," which "observes and records the sequence of events that made up Schmitt's problematic life, as well as his conscious attempts at finding normative orientation and stability.
Summary of an International and a Regional Symposium: Acid-Related Diseases - Improving Treatment Options
No full textThe author examines the clinical impact of findings from a key international workshop on acid peptic disorders, “Appropriate acid suppression for the healing of acid-related diseases,” and from an important meeting which summarized results of a cross-Canada study of the symptomatic treatment of dyspepsia due to esophagitis and duodenal ulcer disease
A study of the effects of cochlear loss on the auditory brainstem response (ABR) specificity and false positive rate in retrocochlear assessment.
No full textThe auditory brainstem response (ABR) test is widely used as a screen for retrocochlear dysfunction in individuals suffering idiopathic auditory and vestibular disturbance. Although its sensitivity for lesions of the lower brainstem is well established, hearing loss is known to have significant effects upon the test's specificity and false positive rate. This study analysed the effects of aspects of cochlear hearing loss including level, slope and general audiogram shape on these properties of the ABR test in a large clinical group. The study comprised 306 patients (153 male, 153 female) referred for ABR screening to exclude retrocochlear dysfunction. Of 566 ears meeting the inclusion criteria, 85 (15 per cent) failed the test. On follow-up eight ears (3 per cent) were confirmed to have some form of retrocochlear abnormality, seven of which were pathological. All had abnormal ABR results. No cases of retrocochlear abnormality were found in the ABR pass group. In those patients diagnosed as free of retrocochlear problems, the importance of the I-V interval as a primary index of function was confirmed. It displayed a high specificity (>90 per cent) which was largely independent of the level or slope of high-frequency hearing loss. In contrast wave V specificity decreased with increasing loss and increasing slope. Its value as a functional index was limited with losses greater than 70 dB HL in whom specificity fell below 70 per cent. The study concluded that, despite reducing interval availability above 60 dB HL, wave V latency cannot be used as an alternative index because it displays weakening specificity over this range of loss. With the problems inherent in applying latency corrections, the author advocates the use of improved procedures for wave I identification in these cases
A study of the effects of cochlear loss on the auditory brainstem response (ABR) specificity and false positive rate in retrocochlear assessment
No full textThe auditory brainstem response (ABR) test is widely used as a screen for retrocochlear dysfunction in individuals suffering idiopathic auditory and vestibular disturbance. Although its sensitivity for lesions of the lower brainstem is well established, hearing loss is known to have significant effects upon the test's specificity and false positive rate. This study analysed the effects of aspects of cochlear hearing loss including level, slope and general audiogram shape on these properties of the ABR test in a large clinical group. The study comprised 306 patients (153 male, 153 female) referred for ABR screening to exclude retrocochlear dysfunction. Of 566 ears meeting the inclusion criteria, 85 (15 per cent) failed the test. On follow-up eight ears (3 per cent) were confirmed to have some form of retrocochlear abnormality, seven of which were pathological. All had abnormal ABR results. No cases of retrocochlear abnormality were found in the ABR pass group. In those patients diagnosed as free of retrocochlear problems, the importance of the I-V interval as a primary index of function was confirmed. It displayed a high specificity (>90 per cent) which was largely independent of the level or slope of high-frequency hearing loss. In contrast wave V specificity decreased with increasing loss and increasing slope. Its value as a functional index was limited with losses greater than 70 dB HL in whom specificity fell below 70 per cent. The study concluded that, despite reducing interval availability above 60 dB HL, wave V latency cannot be used as an alternative index because it displays weakening specificity over this range of loss. With the problems inherent in applying latency corrections, the author advocates the use of improved procedures for wave I identification in these cases
Basic Science for the Clinical Gastroenterologist: A Review of the Recent Literature on the Small Bowel – Part II
No full textIn small bowel science, as in all parts of medicine, there has been a recent explosion of information. This is the second of a two-part series in which the scientific basis of clinical gastroenterology practice and its future are considered. Advances in understanding the mechanisms of intestinal transport are examined, followed by a perspective of intestinal adaptation in health and disease. The author also discusses clinically important areas of motility and bloodflow
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